15460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao//===- ContextFactory.h ---------------------------------------------------===// 25460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// 35460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// The MCLinker Project 45460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// 55460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// This file is distributed under the University of Illinois Open Source 65460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// License. See LICENSE.TXT for details. 75460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// 85460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao//===----------------------------------------------------------------------===// 987f34658dec9097d987d254a990ea7f311bfc95fStephen Hines#ifndef MCLD_MC_CONTEXTFACTORY_H 1087f34658dec9097d987d254a990ea7f311bfc95fStephen Hines#define MCLD_MC_CONTEXTFACTORY_H 115460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 125460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao#include <mcld/LD/LDContext.h> 135460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao#include <mcld/Support/UniqueGCFactory.h> 145460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao#include <mcld/Support/Path.h> 155460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 165460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liaonamespace mcld 175460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao{ 185460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/** \class ContextFactory 195460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * \brief ContextFactory avoids the duplicated LDContext of the same file. 205460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * 215460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * MCLinker is designed for efficient memory usage. Because user can give 225460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * MCLinker the same input file many times on the command line, MCLinker must 235460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * avoid opening identical file twice. 245460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * 255460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * ContextFactory is the guard to prevent redundant opening. MCLinker does not 265460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * create LDContext directly. Instead, it creates LDContext by ContextFactory. 275460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * ContextFactory returns the identical reference of LDContext if it's openend. 285460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * 295460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * @see LDContext 305460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao * @see UniqueGCFactoryBase 315460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao */ 325460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liaoclass ContextFactory : public UniqueGCFactoryBase<sys::fs::Path, LDContext, 0> 335460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao{ 345460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liaopublic: 355460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao explicit ContextFactory(size_t pNum); 365460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao ~ContextFactory(); 375460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 38affc150dc44fab1911775a49636d0ce85333b634Zonr Chang LDContext* produce(); 395460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao LDContext* produce(const sys::fs::Path& pPath); 405460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao}; 415460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 425460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} // namespace of mcld 435460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 445460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao#endif 455460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 46